/* Article Page Styles */

.article-page {
    background-color: var(--primary-dark);
}

/* Article Header */
.article-header {
    padding-top: 120px;
    padding-bottom: 40px;
    background: linear-gradient(180deg, var(--secondary-dark) 0%, var(--primary-dark) 100%);
    border-bottom: 1px solid var(--border-color);
}

.article-container {
    max-width: 1200px;
}

.article-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.article-breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.article-breadcrumb a:hover {
    color: var(--primary-accent);
}

.article-header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    line-height: 1.2;
    margin: 1rem 0;
    max-width: 900px;
}

/* Article Layout */
.article-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 4rem;
    padding: 60px 0;
    align-items: start;
}

/* Table of Contents */
.article-toc {
    position: relative;
}

.toc-sticky {
    position: sticky;
    top: 100px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.toc-sticky h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.toc-sticky ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-sticky li {
    margin-bottom: 0.75rem;
}

.toc-sticky a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition);
    display: block;
    padding: 0.25rem 0;
}

.toc-sticky a:hover {
    color: var(--primary-accent);
    padding-left: 0.5rem;
}

/* Article Content */
.article-content {
    max-width: 800px;
}

.article-content .lead {
    font-size: 1.25rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-weight: 400;
}

.article-content section {
    margin-bottom: 3rem;
}

.article-content h2 {
    font-size: 2rem;
    margin: 3rem 0 1.5rem 0;
    color: var(--text-primary);
    padding-top: 1rem;
}

.article-content h3 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem 0;
    color: var(--text-primary);
}

.article-content h4 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem 0;
    color: var(--text-primary);
}

.article-content p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.article-content li {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.article-content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.article-content a {
    color: var(--primary-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.article-content a:hover {
    border-bottom-color: var(--primary-accent);
}

/* Article Highlight Boxes */
.article-highlight {
    background: linear-gradient(135deg, rgba(250, 250, 250, 0.08) 0%, rgba(250, 250, 250, 0.02) 100%);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary-accent);
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
}

.article-highlight h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--primary-accent);
}

.article-highlight ul {
    margin-bottom: 0;
}

.article-highlight p:last-child {
    margin-bottom: 0;
}

/* Info/Stat Grids */
.info-grid,
.stats-grid,
.advantage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.info-card,
.advantage-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: var(--transition);
}

.info-card:hover,
.advantage-item:hover {
    border-color: var(--primary-accent);
    transform: translateY(-4px);
}

.info-card h4,
.advantage-item h4 {
    color: var(--primary-accent);
    margin-top: 0;
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.info-card p,
.advantage-item p {
    margin-bottom: 0;
    font-size: 1rem;
}

.stat-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-accent);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Comparison Table */
.comparison-table {
    overflow-x: auto;
    margin: 2rem 0;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.comparison-table th,
.comparison-table td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background-color: rgba(250, 250, 250, 0.05);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comparison-table td {
    color: var(--text-secondary);
    font-size: 1rem;
}

.comparison-table tbody tr:last-child td {
    border-bottom: none;
}

.comparison-table tbody tr:hover {
    background-color: rgba(250, 250, 250, 0.02);
}

/* Step Guide */
.step-guide {
    margin: 2rem 0;
}

.step {
    display: grid;
    grid-template-columns: 60px 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-accent) 0%, rgba(250, 250, 250, 0.8) 100%);
    color: var(--primary-dark);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    margin-top: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.step-content p {
    margin-bottom: 0;
}

/* Criteria List */
.criteria-list {
    margin: 2rem 0;
}

.criteria-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.criteria-item strong {
    display: block;
    color: var(--primary-accent);
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.criteria-item p {
    margin-bottom: 0;
}

/* FAQ Section */
.faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--primary-accent);
}

.faq-item h3 {
    color: var(--text-primary);
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.faq-item p {
    margin-bottom: 0;
}

/* Article CTA */
.article-cta {
    background: linear-gradient(135deg, rgba(250, 250, 250, 0.1) 0%, rgba(250, 250, 250, 0.03) 100%);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem;
    text-align: center;
    margin: 3rem 0;
}

.article-cta h4 {
    font-size: 1.75rem;
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.article-cta p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.article-cta .btn-primary,
.article-cta .btn-secondary {
    margin: 0 0.5rem;
}

/* Article Conclusion */
.article-conclusion {
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.article-conclusion h2 {
    margin-top: 0;
}

/* Related Articles */
.related-articles {
    padding-top: 3rem;
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

.related-articles h3 {
    font-size: 1.75rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.related-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-decoration: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    transition: var(--transition);
}

.related-card:hover {
    border-color: var(--primary-accent);
    transform: translateY(-4px);
}

.related-category {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background-color: rgba(250, 250, 250, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    width: fit-content;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.related-card h4 {
    color: var(--text-primary);
    font-size: 1.125rem;
    margin: 0;
    line-height: 1.4;
}

.related-link {
    color: var(--primary-accent);
    font-size: 0.9375rem;
    font-weight: 500;
    margin-top: auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .article-layout {
        grid-template-columns: 200px 1fr;
        gap: 2rem;
    }
    
    .toc-sticky {
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    .article-header {
        padding-top: 100px;
        padding-bottom: 30px;
    }
    
    .article-layout {
        grid-template-columns: 1fr;
        gap: 0;
        padding: 40px 0;
    }
    
    .article-toc {
        display: none;
    }
    
    .article-content h2 {
        font-size: 1.75rem;
        margin: 2rem 0 1rem 0;
    }
    
    .article-content h3 {
        font-size: 1.375rem;
    }
    
    .article-content .lead {
        font-size: 1.125rem;
    }
    
    .info-grid,
    .stats-grid,
    .advantage-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .step {
        grid-template-columns: 50px 1fr;
        gap: 1rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .article-cta {
        padding: 2rem;
    }
    
    .article-cta .btn-primary,
    .article-cta .btn-secondary {
        display: block;
        width: 100%;
        margin: 0.5rem 0;
    }
    
    .related-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .article-breadcrumb {
        font-size: 0.75rem;
    }
    
    .article-header h1 {
        font-size: 1.75rem;
    }
    
    .article-content p,
    .article-content li {
        font-size: 1rem;
    }
    
    .comparison-table {
        font-size: 0.875rem;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 1rem;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .article-toc,
    .article-cta,
    .related-articles,
    .footer {
        display: none;
    }
    
    .article-header {
        padding-top: 0;
    }
    
    .article-content {
        max-width: 100%;
    }
    
    .article-content a {
        color: var(--text-primary);
        text-decoration: underline;
    }
}